Noctis does follow the thread possibilities to their logical ends, but I think she's less concerned with what Acantha might regret, and more about what would diminish her as the intended ruler of New Rome, and the effects that might have. True, Acantha's possible regrets play a role, but my guess would be that she takes the wellbeing of New Rome into greater account.

I think Lynn and Acantha are having fun at Noctis' expense here. Acantha is doing it to relieve stress.

This suggesting crazy things is exactly what she was doing in New Rome when Lynn was freaked out. Admittedly she does crazy things but she thinks it through first. I don't think she actually wants to have body art done right now, but pushing the crazy button can be fun if you don't abuse it.

Also I seem to remember that Lynn is 18 and that Acantha is 16, so possibly without parental or Guardian consent, she can't get the tattoos and body art anyways.

Heck, no. You do not make your bodyguard carry the bags. If you need someone to carry your bags, you get a porter. Porters aren't going to jump between you and a threat, so it doesn't matter of they're tied down by carrying a bunch of stuff.

Have them delivered. They'll show up day after tomorrow, after Security goes over every piece with a fine toothed comb, possibly including disassembling everything to look for malicious components..

This may be too early to think about, I've been wondering for a while now on how a suitor would be handled for Acantha in the future. Gotta keep the blood line going just like in New Troy. (just thinking ahead)

Are we dealing with non-sequential time streams here? Three days seems awfully short for Maxus to get the Waster intel, mount a military expedition, Ophelia gets shot apart, salvaged, reconstructed and returned to New Rome.

Time can be a fluid thing, three days have elapsed from the time Acantha fled the city to now, not bad for a heart transplant recovery.

Feelie's story could be just starting, in progress, yet to begin or even over if it had been started seperately from the events in the city and prior to the few hours the rebellion/rescue took. Flicking back and forth between storylines doesn't have to be linear or concurrent, it's just the things happening to a group of people that may or may not be referenced to another group or even affect them at the time. To me, the way time works in an expansive, multi-threaded story like this is like the description of how FTL works in a lot of sci-fi stories. "IJD"... "It Just Does" ;)

Recalling all the clues in recent pages...
Ophelia had been banished some weeks/months? previous to the Lynn kidnapping because of a tapestry fire/bad smell episode in the Black Palace. She was already out in the wastes with Scorpion group in training when the kidnapping/raid on New Rome took place. Maxus spent about 2-3 days sorting out Katya's situation, coping with the Senate, putting out fires, and organising a probe into a suitable gutter target - then Scorpion group's untimely demise at the hands of the berserker/bolo figure.
Simultaneously with this latter sequence, Acantha is flown to New Troy, has heart surgery (and there's more of that to come when she gets her new organic heart), recovers (from 1st Op), and goes shopping with Lynn, Athena and Noctis. I reckon that about this time Ophelia is being put into a Commander Pauline chassis by Jordan and Ivy. In a couple of days, Jordan and Ivy, flush with credits, will be SHOPPING in a New Troy swap mart, but probably not in platinum sector... I don't think they will meet Lynn/Acantha/Noctis/Athena today.
But I wouldn't put it past CC and TR to do something delicious like that!! Once again I commend the artists/authors for a rich and complex and subtle world.

Thinking about it... Katya's situation would take quite a few days to sort out, and would need Dolly's input to get the right coords for a repaired Hrist (with Quintus) to get Katya reunited with Dusty. Mind you, a repaired Hrist collected Ophelia about a day after the doomed Scorpion group raid, so New Troy has decent Cassian repair facilities that were probably NOT affected by the Lynn raid.

?? did you mean "New Rome."? ..
and Katya's time line:: day/morning right after fight. she is informed of "master" gone way.. Big man's nice lady, helps with new clothes an she gits go out shots.. "sleep " .. day two.. she is flown to sister...

"It's easy to forget" that "it has only been three days". She's leaning a little on the fourth wall, there (which is fine). For the viewers, it's easy to forget that it's only been three days for a few reasons:
1) It's taken MUCH longer real time due to the nature of the medium.
2) Given the timeskips involved in surgery and things, it's the statement itself that's actually establishing the specific time frame (seriously: Try coming to the conclusion of "three days" since the correction of the gene error empirically without the statement based on stuff that's happened on screen).

"Also side question where is kyle?"
since it's only been 3 days.. i wood say still working on/with Aenaeas.. (have to look up name..)
cuz swapping body parts ( heart, knee, body x3) is easy.. rebuilding the Brain so as not to kill everybody.. gonna take a few days.!!!

Well since they have subdermal injection capability through regular medical devices I don't see why it wouldn't be possible to modify one of those to basically ink print an instant dermal tattoo. Basically a wand with a line of injectors that gets waved across the tattoo site. A computer feeds the correct colors of ink to the various injectors based on the colors and the time over a plot of skin. Automate the manual part and let the artist create the art.